I read the manual and I can't find anything on this. My list is unmoderated and I am using topics to keep it organized (something the manual does not suggest). Most of the time it works well, but lately a few people have been using a subject line that starts with the word ALL: to send their messages. This bypasses the topic system and sends their messages to everybody on the list. Usually it is an incredibly trivial message, and twice it has been rude requests to cancel subscriptions (I did immediately). And then someone answers them with what should have been a private email and before I know it a whole message thread is going on. And, yes, I ask them not to use it, but you know subscribers.... So, is there any way to turn off ALL: as a topic or rename it to something else like ADMIN? Thanks for the help, Karen Strauss